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I just bought a used Carrier FV4BNB006 Air Handler without elec heat (just the air handler itself) . I pulled down the Installation instructions, but dang if I can find the right circuit breaker size to use. All the manual says is "Line Voltage Connections - 1. Connect the 208/230v power leads from field disconnect to yellow and black stripped leads. 2) Connect ground wire to unit ground lug." No table showing breaker amps at all that I can find. The unit won't be delivered until Monday, so I have no electrical plackard to refer too at this point, but I need to run elec lines this weekend. Any idea what breaker amp size this requires?

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Hi, when you get the unit, it will tell you the Min. and max amps on the units data plate.They normally run in the 30 to 60 amp range depending on the tonnage of the air handler. What I would do, is run your lines now, and pick up a 60 amp disconnect box. You can use what ever size fuses in the box that the data plate says. Very easy to find out. Good Luck,
Shastalaker7
A/C, & Heating Contractor

Posted on Apr 01, 2011

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